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DeviceUseTrigger class

Represents an event that a Windows Runtime app can trigger to initiate a long-running operation with a device or sensor.

DeviceUseTrigger lets your Windows Runtime app access sensors and peripheral devices in the background, even when your foreground app is suspended. For example, depending on where your app is running, it could use a background task to synchronize data with devices or monitor sensors.

This class can be used in Windows Store apps and Windows Phone Store apps. However, a DeviceUseTrigger background task supports different APIs, and is subject to different policies, depending where it's running (PC or phone). To learn more about these differences, see Accessing sensors and devices from a background task.

Important This trigger cannot be used with single-process background tasks.

Methods

Triggers the background task and returns a DeviceTriggerResult indicating success or failure of the trigger request. Takes the DeviceInformation.ID of the device or sensor that the background task will access.

Triggers the background task and returns a DeviceTriggerResult indicating success or failure of the trigger request. Takes the DeviceInformation.ID of the device or sensor that the background task will access, and an optional app-specific string passed to the background task identifying which operation to perform.

Remarks

Note Before your app triggers a background task on a phone, it must first call RequestAccessAsync to check if the app is able to request a background task. This check is not required when your app is running on a PC.